Recommended sampling processes
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Sampling from a Drum
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Take a 1 liter sample from the top of the drum
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Vigorously shake the drum and take an additional 1 liter sample
Sampling from a Tank
If the foam concentrate is contaminated or decomposed, samples taken from the top and bottom of a storage container may have different physical properties. For this reason we recommend not to spin concentrates before sampling.
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Generally, two samples per storage container is recommended. One sample from below and one sample from the top 1 liter each.
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After taking the samples, do not swirl the container until the samples and results have been checked. However, if only one sample can be taken, then swirl the container for a “total sample” before taking a one-liter sample.
Sampling from the bottom of a tank
When taking a sample from the bottom of a foam storage tank, it is important that any sludge, sediment, rust, scale, etc is removed before collection of the sample. To do this, draw off at least 5-10 liters of product before taking a sample.